EP2544945A1 - Association d'un mât et d'une voile - Google Patents

Association d'un mât et d'une voile

Info

Publication number
EP2544945A1
EP2544945A1 EP11711023A EP11711023A EP2544945A1 EP 2544945 A1 EP2544945 A1 EP 2544945A1 EP 11711023 A EP11711023 A EP 11711023A EP 11711023 A EP11711023 A EP 11711023A EP 2544945 A1 EP2544945 A1 EP 2544945A1
Authority
EP
European Patent Office
Prior art keywords
mast
sail
batten
primary
mounting clamp
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP11711023A
Other languages
German (de)
English (en)
Inventor
Tue Niels Pii Korremann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Watercraft Innovation APS
Original Assignee
Watercraft Innovation APS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Watercraft Innovation APS filed Critical Watercraft Innovation APS
Publication of EP2544945A1 publication Critical patent/EP2544945A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63B—SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING 
    • B63B15/00—Superstructures, deckhouses, wheelhouses or the like; Arrangements or adaptations of masts or spars, e.g. bowsprits
    • B63B15/0083—Masts for sailing ships or boats
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/06—Types of sail; Constructional features of sails; Arrangements thereof on vessels
    • B63H9/065—Battens
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63H—MARINE PROPULSION OR STEERING
    • B63H9/00—Marine propulsion provided directly by wind power
    • B63H9/04—Marine propulsion provided directly by wind power using sails or like wind-catching surfaces
    • B63H9/08—Connections of sails to masts, spars, or the like

Definitions

  • the present invention relates to a mast and sail combination for a wind-powered craft such as for example a sailboat or the like.
  • sailboats are provided with a mast, a boom and a main sail attached to at least the mast and partially to the boom. Furthermore, foresails may be stayed between the mast and the bow of the vessel.
  • a hollow mast profile having a cross sectional part-airfoil shape has air channels provided on either side of the mast along the length of the mast.
  • the mast is furthermore provided with an outer skin such that by providing air pressure in one or both of the channels on either side of the mast the outer skin can be deformed thereby attaining a more aerodynamic optimal shape such that the transition between the mast and the sail attached to the rear end of the mast is as smooth and non-turbulent as possible.
  • a further example is disclosed in EP 0446615 wherein a circular mast is provided with transition members where each transition member is furthermore provided with a sail attachment member, flexibly attached to said attachment member.
  • the transition members are distributed along the mast.
  • the sail is provided with a plural- ity of horizontal battens which all extends into a special profile provided in/on the mast.
  • the object of the construction is to allow for easy hoisting and lowering of the main sail on sailing vessels.
  • the ends of the battens arranged inside the mast are provided with spherical bodies which shall easy the friction, avoid jamming and thereby facilitate easy hoisting and lowering of the sail.
  • the present invention addresses this by providing a mast and sail combination for a wind powered craft, in particular a sailboat, wherein the mast has a length along a longitudinal axis, a forward surface and a rear edge relating to the intended direction of vehicle travel, and where for at least a part of the mast's length, the mast has a cross sectional shape corresponding to an airfoil, where along the rear edge of said mast, means are provided for attaching a sail, where said sail is provided with one or more battens arranged in batten pockets in the sail, where at least one primary batten extends from the sail's leech and into said mast, where said primary batten is arranged at an angle relative to the longitudinal axis of said mast, which angle is less than 90°.
  • the primary batten continues into the mast profile. Furthermore, the primary batten is movable inside the mast profile such that the primary batten may pivot about a point substantially corresponding to the rear edge of the mast. In this manner it is possible for the primary batten to attain a position relative to the side of the mast such that a substantially flush relationship will be obtained between the mast's aerodynamic/airfoil shape and the sail surface mounted to the rear edge of the mast.
  • the primary batten will increase the batten's sail- shape performance characteristics, such that by adjusting the primary batten correctly relative to the mast the sail surface may obtain an optimum shape according to the present wind and sailing conditions.
  • the leech of the sail would require special means in order to tighten/adjust the leech.
  • the shape of the sail adjacent the leech is also very important in generating the most optimum passage of the wind past the sail, and thereby generating lift.
  • the formulation "angle is less than 90°”, shall be understood as the bat- ten not having an angle relative to the longitudinal axis of the mast of 90°, as for example the battens illustrated in WO2008/136669 has.
  • Airfoil shape relates to a cross section which will increase the mast's performance.
  • Traditional masts are round or rectangular in cross section, whereas some of the prior art cited above refers to masts provided with means between the mast profile and the sail, which in fact acts as an airfoil shape, see for example DE08525953. It is however a more stable, stiff and more reliable construction to have the mast itself in the shape of an airfoil.
  • a mounting clamp is provided at the luff edge of the sail where said primary batten extends into the mast, where said mounting clamp is provided on both sides of the sail material and that an aperture corresponding in size to the cross section of the primary batten is provided in said mounting clamp.
  • the mounting clamp serves to support the sail surface in the position where the pri- mary batten extends out through the batten pocket such that increased strength is provided in this position. Furthermore, by providing the mounting clamp with a certain thickness it will also serve as part of a "hinge" in that as the primary batten pivots around the rear edge of the mast, the mounting clamp will provide a larger surface and point of resistance such that the sail surface will not deform in this area but provide a smooth sail surface and thereby increased performance, i.e. no turbulence generating effect.
  • the mounting clamp in this manner serves at least five purposes: first to guide the batten into the masts profile, secondly to provide wear-protection between the batten, sail and mast, thirdly to allow the sail to slide easily up/down the mast in use, fourthly as a hinge member, allowing the batten and thereby sail to pivot relatively to the mast, and fifth as a backstop when the sail is strung out between the battens intersection with the clamp and the opposite end of the batten at the leech of the sail.
  • the primary batten is provided with means for engaging the mounting clamp, said means is arranged at a distance from an end of said primary batten, such that only a pre-determined part of said primary batten may extend through the aperture in the mounting clamp into the mast.
  • the sail In this manner it is possible to tension the sail relative to the batten without affecting the part of the primary batten being inserted into the mast such that depending on wind conditions the sail may be more or less tensioned and/or provided with a curved shape without this having an effect on the part of the primary batten inserted inside the mast.
  • the mounting clamp will provide a hold against the rear edge of the mast and as the primary batten is suspended between the mounting clamp and the claw of the sail the forces generated in the primary batten will be maintained in the sail's surface in order to shape the sail appropriately.
  • the end of the primary batten opposite the end of the batten extending into the mast terminates in the clew of the sail.
  • the invention in a further advantageous embodiment provides that a plurality of secondary battens are provided distributed in the sail's surface, extending at an angle relative to the mast, where said secondary battens does not enter the mast.
  • a plurality of secondary battens are provided distributed in the sail's surface, extending at an angle relative to the mast, where said secondary battens does not enter the mast.
  • a leech tensioning cord, a luff tensioning cord and a foot tensioning cord are provided in the sail.
  • leech, luff and foot tensioning cords may be considered trivial for traditional sails, these tensioning cords provide special and added advantages when implemented together with the primary batten.
  • the mounting clamp and the primary batten due to its insertion into the rear edge of the mast will still be allowed to pivot relative to the mast such that no horizontal limitation of the sail is induced by tension- ing of the luff cord.
  • the primary batten will be able to pivot in a horizontal plane in order to follow the sails position, i.e. either sailing on starboard or port tack, and pivot in a vertical plane, having the point where the batten enters the mast as a pivot point.
  • the pivotal action is created when the foot tensioning cord is loosened or tightened, which will cause the primary batten to rotate.
  • the leach of the sail will be stabilised in a normal manner, also known from regular sail crafts.
  • tensioning the food tensioning cord the sail surface will be stretched all over the sail surface due to the provision of the primary batten and the mounting clamp.
  • the mounting clamp will act as a pivot point around which the primary batten will be able to pivot slightly in a vertical direction whereby the leech of the sail will be stretched, activated by the foot tensioning cord.
  • the surface of the mast will continue, substantially unbroken onto the sail, whereby the sail and mast together forms a lift generating surface.
  • the distance between the mast's forward surface and the rear edge is not constant, and the mast is provided with pivotal means connecting the mast to the craft.
  • the mast is in this manner provided with a certain amount of flexibility along its length in that the decreased distance between the forward surface and the rear edge will make it relatively less stiff in the top than in the bottom. Therefore, by for example tightening the foot tensioning cord the mast will have a tendency to bend backwards due to the transfer of stress from the foot tensioning cord through the leech of the sail.
  • the mast may pivot about a longitudinal axis it is possible to adjust the sail and the airfoil mast in such a manner that the mast and the sail together in any position will obtain the optimum curved shape relative to the wind in order to generate maximum lift.
  • the leech may be provided with a leech tensioning cord, which in cooperation with the foot tensioning cord is used to adjust the tensioning in the leech of the sail.
  • the primary batten terminates in the sail's claw, and the craft's main sheet is attached to the claw optionally directly at the primary batten's termination.
  • the primary batten acts as a boom, i.e. having a combined effect as a sail batten and a boom such that it is possible to adjust and manoeuvre the sail in a conventional manner by manipulating the main sheet.
  • Figure 1 illustrates a mast and sail combination
  • Figure 2 illustrates a cross section through the primary batten and the mast
  • FIG. 3 illustrates a mast and sail combination
  • a mast and sail combination according to the invention is illustrated in figure 1.
  • the mast 1 has as illustrated in figure 2, which will be described below, a cross section which is aerodynamically advantageous, for example in the shape of an airfoil.
  • the mast has a front surface 2 and a rear edge 3.
  • a sail 4 is attached to the mast.
  • the sail 4 is in this embodiment provided with a primary batten 5 as well as secondary battens 6.
  • the primary batten 5 extends between the claw 7 of the sail 4 and into the interior of the mast 1 as will be described below with reference to figure 2.
  • the batten pocket accommodating the primary batten 5 is furthermore provided with a mounting clamp 8 which will be further described with reference to figure 4 and 5.
  • the primary batten is arranged at an angle ⁇ which a less than 90° relative to the longitudinal axis of the mast 1 schematically indicated by the dashed line 10.
  • a main sheet 9 is connected between the claw 7 of the sail at the primary batten's 5 termination point and the vessel 11. In this configuration 11 the primary batten 5 will in effect be acting both as a batten and as a boom.
  • the mast 1 is furthermore mounted to the vessel 11 by means 12 allowing the mast 1 to pivot about the longitudinal axis 1 of the mast such that the combination of mast and sail may be arranged at the most appropriate angle relative to the wind whereby both the mast and the sail will provide lift and thereby power to the vessel 11. In this manner it is possible to provide a mast and sail combination where both the mast and the sail provides part of the lift which is necessary in order to power the vessel.
  • the mast 1 By furthermore providing the mast 1 with an aerodynamic shape and allowing the sail to be shaped due to the provision of the primary batten 5 and the secondary batten 6 the overall mast and sail combination will for the sake of generating lift be acting as one homogenous unit.
  • FIG 2 a cross section through the primary batten 5 and the mastl is illus- trated.
  • dashed lines is illustrated the position of the primary batten 5 ' after the mast and sail combination has been tacked, i.e. after the vessel has changed its course relative to the wind.
  • a part 5" of the primary batten 5 extends into the interior of the mast 1, and the extent is limited by the mounting clamp 8.
  • the sail is provided with a foot tensioning cord 14 along the foot of the sail and a luff tensioning cord along the luff 15 of the sail.
  • the luff tensioning cord is arranged such that the tack 16 of the sail may be pulled downwards relative to the head of the sail 17 in order to straighten the luff 15.
  • the mounting clamp 8 will in practice be fixed vertically relative to the mast 1 , but may still be free to pivot in a horizontal direction as indicated in figure 2.
  • the present invention also provides for these trim options.
  • the luff tensioning line may be tightened more or less such that sail's luff along the rear edge 3 of the mast 1 may be more or less tensioned. This is carried out by adjusting the distance between the tack 16 and the head of the sail 17. By stretching these as far apart as possible the sail 4 between the tack 16 and the head of the sail 17 will be under heavy tension and thereby be relatively flat. By furthermore extending the leech of the sail 13 as much as possible from the rear edge 3 of the mast 1 the sail will also be flattened in that direction. This flattening is obtained by putting as much tension as possible in the primary and secondary battens 5, 6.
  • the primary batten 5 is arranged in a batten pocket 18.
  • the mounting clamp 8 is in this embodiment a two-part member which is arranged on either side of the sail surface 4 as illustrated in figure 5.
  • the two parts 8', 8" of the mounting clamp are connected by appropriate means, in this example illustrated by a bolt 19.
  • an aperture 20 which is connected to the batten pocket 18 such that as the pri- mary batten 5 is inserted into the batten pocket 18 the section 5 " of the primary batten 5 may extend through the aperture 20 and into the interior of the mast as illustrated in figure 2.
  • the batten is fixed relative to the clamp.
  • a two-part clamp is illustrated, arranged on both sides of the sail's surface.
  • a one-part clamp attached to one side of the sail, or a multi-part clamp.
  • a clamp construction having apertures on both sides of the sail, where a double primary batten is arranged in pockets on either side of the sail may be contemplated with in the scope of the present invention.
  • the primary battens termination point means (not illustrated) are provided for fixing the primary batten 5 relative to the mounting clamp 8 such that the sail surface 4 between the mounting clamp and the claw, see figures 1 and 3, may be extended in order to obtain the desired tensioning in the sail 4 and thereby the curvature desirable according to the present wind conditions.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Ocean & Marine Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Sustainable Energy (AREA)
  • Toys (AREA)

Abstract

Cette invention se rapporte à l'association d'un mât et d'une voile pour une embarcation actionnée par le vent, en particulier un bateau à voile. Ledit mât (1) possède : une longueur qui suit un axe longitudinal ; une surface avant (2) et un bord arrière (3) qui dépendent de la direction de déplacement souhaitée pour le véhicule ; une forme en coupe, sur au moins une partie de sa longueur, qui correspond à une surface portante ; des moyens qui se trouvent le long de son bord arrière et qui permettent d'attacher une voile (4). Cette voile est munie d'une ou plusieurs lattes (5, 6) placées dans des fourreaux de lattes de la voile, au moins une latte principale s'étend à partir de la chute (13) de la voile et dans ledit mât, et cette latte principale forme un angle de moins de 90° avec l'axe longitudinal du mât.
EP11711023A 2010-03-10 2011-03-10 Association d'un mât et d'une voile Withdrawn EP2544945A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DKPA201070094 2010-03-10
PCT/DK2011/050074 WO2011110178A1 (fr) 2010-03-10 2011-03-10 Association d'un mât et d'une voile

Publications (1)

Publication Number Publication Date
EP2544945A1 true EP2544945A1 (fr) 2013-01-16

Family

ID=43975979

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11711023A Withdrawn EP2544945A1 (fr) 2010-03-10 2011-03-10 Association d'un mât et d'une voile

Country Status (2)

Country Link
EP (1) EP2544945A1 (fr)
WO (1) WO2011110178A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109131722B (zh) * 2018-09-28 2023-09-29 向荣游艇港供应链开发（深圳）有限公司 一种帆船

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008136669A1 (fr) * 2007-05-02 2008-11-13 Wubbo Ockels B.V. Ensemble mât et vaisseau à voiles équipé d'un tel mât

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4044702A (en) * 1974-10-21 1977-08-30 Jamieson Robert S High efficiency aerodynamic sail system for boats, and method for sailing
EP0191420A1 (fr) 1985-02-15 1986-08-20 Dante Albanese Construction de mât et voile pour bateaux
DE8525953U1 (de) 1985-09-11 1985-10-24 North Sails Windsurfing GmbH, 8122 Penzberg Segel
DE9001606U1 (de) 1990-02-12 1990-04-19 Schütz-Werke GmbH & Co KG, 5418 Selters Profilgeber für Segel, insbesondere für Segel von Surfbrettern
DE19520019A1 (de) 1995-05-23 1996-11-28 Donald Lippert Profilierte Masttasche für durchgelattete Segel
DE20114841U1 (de) 2001-09-08 2003-01-16 Stempfle, Josef, 86637 Wertingen Segelmast
US20070034132A1 (en) * 2005-08-15 2007-02-15 Stevenson William H Iv Batten control for sailboats

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008136669A1 (fr) * 2007-05-02 2008-11-13 Wubbo Ockels B.V. Ensemble mât et vaisseau à voiles équipé d'un tel mât

Also Published As

Publication number Publication date
WO2011110178A1 (fr) 2011-09-15

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